can someone help please ?

[tex]0,4(5x-15)=2,5(x+3)\\\\2x-6=2,5x+7,5\\\\2x-2,5x=7,5+6\\\\-0,5x=13,5 \ \ /\cdot(-2)\\\\\huge\boxed{x=-27}[/tex]

Answer:

Answer:

x=−27

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

0.4(5x−15)=2.5(x+3)

(0.4)(5x)+(0.4)(−15)=(2.5)(x)+(2.5)(3)(Distribute)

2x+−6=2.5x+7.5

2x−6=2.5x+7.5

Step 2: Subtract 2.5x from both sides.

2x−6−2.5x=2.5x+7.5−2.5x

−0.5x−6=7.5

Step 3: Add 6 to both sides.

−0.5x−6+6=7.5+6

−0.5x=13.5

Step 4: Divide both sides by -0.5.

−0.5x

−0.5

=

13.5

−0.5

x=−27

Answer:

x=−27

[tex] \large \mathfrak{Solution : }[/tex]

Time taken when traveling at 30 km/h :

Distance travelled :

now, if the speed is 44 km/h it will take :

The car will take 72 - 48 = 24 less minutes to cover same distance at an speed of 45 km/h .

Answer: the answer is like it is

Step-by-step explanation:

You just round the number in the tenths 0 is closer to 0 then to 10!

Step-by-step explanation:

hope you will understand ( ´ ▽ ` )ﾉ

Answer:

its 45 bc i searched up the answer and chose the other persons response and turns out its 45 not 60th

Step-by-step explanation:

Answer:

50°

Step-by-step explanation:

The sum of a triangles' angles is 180°

Now set up an equation:

180 - (10 + 120) = ___

180 - 130 = 50°

Answer:

64÷16+[12x{16÷(16-10)}]

64÷16+[12x{16÷6}]

64÷16+[12x2.66666666667]

64÷16+32

4+32

36

Answer:

891 miles

Step-by-step explanation:

You can either multply 81*11 or add 81 to itself 11 times

1 week: 81 miles

2 weeks: 81+81=162 miles

3 weeks: 162+81=243 miles

4 weeks: 243+81=324 miles

5 weeks: 324+81=405 miles

6 weeks: 405+81=486 miles

7 weeks: 486+81=567 miles

8 weeks: 567+81=648 miles

9 weeks: 648+81=729 miles

10 weeks: 729+81=810 miles

11 weeks: 810+81=891 miles

Answer:

c $48

Step-by-step explanation:

8 x 5 is 40 which is the price of the meal then plus the tip its 48

Answer:

arc = 15π

Step-by-step explanation:

The arc is calculated as

arc = circumference of circle × fraction of circle

     = 2πr × [tex]\frac{225}{360}[/tex] ( r is the radius )

given diameter = 24 then r = 24 ÷ 2 = 12

arc = 2π × 12 × [tex]\frac{5}{8}[/tex]

     = 24π × [tex]\frac{5}{8}[/tex]

     = 3π × 5

    = 15π

The total cost of the camera is $73.84

Since Vijay bought a camera that was marked down 80% from the original price of $355, then the amount paid will be:

= $355 - (80% × $355)

= $355 - (0.8 × $355)

= $355 - $284

= $71

Since there is a 4% sales tax, then the total amount paid will be:

= $71 + (4% × $71)

= $71 + (0.04 × $71)

= $71 + $2.84

= $73.84

The total cost of the camera is $73.84

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Answer:

The next term is 42

Step-by-step explanation:

Let's use Arithmetic Progression

a₁ = - 3

a₂ = 12

a₃ = 27

Now,

The Formula of Common Difference d is

d = a₂ - a₁

= 12 - (-3)

= 12 + 3

d = 15

d = a₃ - a₂

= 27 - 12

d = 15

Here, the common difference is same

aₙ = aₙ₋₁ + d

a₄ = a₄₋₁ + 15

a₄ = a₃ + 15

a₄ = 27 + 15

a₄ = 42

So, The next term is 42

-TheUnknownScientist

Answer:

D

Step-by-step explanation:

We can cross off a because it is impossible to have negative of a material.

Now lets get into the System of equations. First subtract both of them to have one common variable(we will find the second one later)

- P + N = 134

- P + 3.1N = 241.10

2.1N = 107.1

107.1/2.1 = 51

Now we know that n = 51

lets substitute,

P + 51 = 134

P = 83

Lets check

83  + 51 = 134

Great! The asnwer is D

Answer:

D.

. . . . .. . . . . . .. . .. . . . . . . . ..

let the last number be x

we know,

[tex] \boxed{mean = \frac{sum \: \: of \: \: all \: \: observations}{number \: \: of \: \: observations} }[/tex]

So,

[tex] \hookrightarrow \: 8 = \dfrac{22 + x}{4} [/tex]

[tex] \hookrightarrow \: 8 \times 4 = 22 + x[/tex]

[tex] \hookrightarrow \: 32 = 22 + x[/tex]

[tex] \hookrightarrow \: x = 32 - 22[/tex]

[tex] \hookrightarrow \: x = 10[/tex]

therefore, the last number is 10.

Answer:

A = ( - 27)

Y = 3

X = 3

B = 8

Z =9

Step-by-step explanation:

Hope that helps

The solution to the equation [tex](\frac{-3jk^3}{2k^2m^3})^3=\frac{Aj^xk^{y}}{Bm^z}[/tex] is a = -27, x =3, y = 9, B = 8k⁶ and z = 9.

An equation is an expression used to show the relationship between two or more numbers and variables.

Given the equation as shown in the question:

[tex]\frac{-3jk^3}{2k^2m^3})^3\\ \\Simplifying\ the\ equation:\\\\=\frac{-27j^3k^{9}}{8k^6m^9} \\\\Comparing \ with\ \frac{Aj^xk^{y}}{Bm^z}\ gives:\\a=-27,x=3,y=9,B=8k^6,z=9[/tex]

The solution to the equation is a = -27, x =3, y = 9, B = 8k⁶ and z = 9.

Find out more on equation at: https://brainly.com/question/2972832

Answer:

12,000

Step-by-step explanation:

40*3 = 120

120*100 = 12,000

Answer:

The answer is x=-9

Step-by-step explanation:

I hope this helps you!

Can't see full image

Answer:

28:12

Step-by-step explanation:

When we take 7 and 3 and multiply them both by 4 we get 28 and 12.

hope this helps!

Answer:

4.1 + 5.2 = 9.3

distance can never be negative

Step-by-step explanation:

Answer:

Try incerting a picture it might help me

Step-by-step explanation:

Answer:

a and d

Step-by-step explanation:

got it right.

Answer:

x^4 - 3x^2 + x^2 - 4

Step-by-step explanation:

hope it helps

Answer:

∣x + 7.5∣ = 2.5

Step-by-step explanation:

∣x + 7.5∣ = 2.5

x + 7.5 = -2.5  OR  x + 7.5 = 2.5

   -7.5      -7.5             -7.5     -7.5

--------------------        ----------------------

x = -10                         x = -5

As you can see, the equation ∣x + 7.5∣ = 2.5, satisfies both of the x values, x=-10 and x=-5.

The absolute value equation that has solutions x= -10 and x = -5 is             | x + 7.5 | = 2.5.

Absolute value function is always positive |x| = a implies  x = a Or - x = - a

According to the given question we have to write a equation we have to write an absolute value equation that has solution x = -10 and x = - 5.

Let the absolute value be ∣x + 7.5∣ = 2.5.

∴ x + 7.5 = 2.5 OR - ( x + 7.5 ) = 2.5

x + 7.5 = 2.5

x = 2.5 - 7.5

x = - 5.

OR

- ( x + 7.5 ) = 2.5

- x - 7.5 = 2.5

- x = 2.5 + 7.5

- x = 10

x = - 10.

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Answer:

triangles unfold into a 180 degree angle so...

Step-by-step explanation:

Alright so the two dashes in a line means they are equivalent so if I only give one final answer use it for both...

D: 180-52=128 now divide by two since equal angles so 64 degrees for the angles

E: 180-90=90, 90/2 so 45 degrees for those angles

F: okay interesting 180-130= 50 degrees so that's the inside angle there for x and y so to find z its 180- 100 which is 80 x&y is 50 while z's 80

G: 180-36=144 divide that by two and viola 72 is the answer

H: the angle of 86 is correct since mirrored. so x is 86. now for the unlisted angle 180-124= 66 so to find y 86+66=152 so 180-152=28. So x=86 y=28 and the unlisted is 66.

(Sorry for my chaotic explanations but I saw the time crunch "!!!!")

Answer:

x = 12

Step-by-step explanation:

5x + 9 - 3x = 18 + 15

2x + 9 = 33

2x (+ 9 - 9) = 33 - 9

2x/2 = 24/2

x = 12

[tex] \huge\boxed{\mathfrak{Question} \downarrow}[/tex]

What is the solution to this equation?

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

[tex] \sf5 x + 9 - 3 x = 18 + 15[/tex]

Combine 5x and -3x to get 2x.

[tex] \sf2x+9=18+15 [/tex]

Add 18 and 15 to get 33.

[tex] \sf2x+9=33 [/tex]

Subtract 9 from both sides.

[tex] \sf2x=33-9 [/tex]

Subtract 9 from 33 to get 24.

[tex] \sf2x=24 [/tex]

Divide both sides by 2.

[tex] \sf \: x=\frac{24}{2} \\ [/tex]

Divide 24 by 2 to get 12.

[tex] \boxed{ \boxed{ \bf \: x=12 }}[/tex]

Work Shown:

5 green discs

7+5+2 = 14 discs total

5/14 is the probability of getting a green disc

(5/14)*140 = 50 green discs are expected if 140 trials are conducted.

The no. of green discs she expects by replacing and drawing again for 140 times is 50.

Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.

Given A bag contains 7 red discs, 5 green discs, and 2 pink discs.

So, no. of sample space N(S) = 7 + 5 + 2 = 14.

∴ The probability of getting a green disc P(G) = N(G)/N(S).

P(G) = 5/14.

Now she replaces the discs drawn and picks one random disc from the bag again 140 times,

Therefore the probability of getting a green disc will remain the same as an independent event because of the replacement.

∴ The no. of green discs she expects is (5/14)×140 = 50 times.

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Answer:

The difference of a number and 4:

The cube of the difference:

Leaving this as is since no simplification is required.

Step-by-step explanation:

[tex]here \: number = x \\ difrence \: of \: number \: and \: 4 \\then \: its \: x - 4 \\ cube \: of \: this = {(x - 4)}^{3} \\ thank \: you[/tex]

Answer: if the width was not effected then the width is still 24 inches

if the area stayed the same, then

find area

area=legnth times width

288=12 times 24

so the new height./legnth =2

288=2 times width

divide by 2

144=width'

the new width =144